<template>
  <div class='home-category' @mouseleave="categoryId=null">
    <ul class="menu">
      <li :class="{active:categoryId===item.id}" v-for="item in menuList" :key="item.id" @mouseenter="categoryId=item.id">
        <RouterLink  :to="`/category/${item.id}`">{{item.name}}</RouterLink>
        <template v-if="item.children">
          <RouterLink v-for="sub in item.children" :key="sub.id" :to="`/categori/sub/${sub.id}`">{{sub.name}}</RouterLink>
        </template> 
      </li>
    </ul>
    <!-- 弹层 -->
      <!-- 弹层 -->
    <div class="layer">
      <h4>{{currCategory&&currCategory.id==='brand'?'品牌':'分类'}} <small>根据您的购买或浏览记录推荐</small></h4>
      <!-- 商品 -->
      <ul v-if="currCategory && currCategory.goods">
        <li v-for="item in currCategory.goods" :key="item" >
          <RouterLink to="/">
            <img :src="item.picture" alt="">
            <div class="info">
              <p class="name ellipsis-2">{{item.name}}</p>
              <p class="desc ellipsis">{{item.desc}}</p>
              <p class="price"><i>¥</i>{{item.price}}</p>
            </div>
          </RouterLink>
        </li>
      </ul>
      <!-- 品牌 -->
      <ul  v-if="currCategory && currCategory.brands">
    <li class="brand" v-for="brand in currCategory.brands" :key="brand.id" >
    <RouterLink to="/">
      <img src="brand.picture" alt="">
      <div class="info">
        <p class="place"><i class="iconfont icon-dingwei"></i>{{brand.place}}</p>
        <p class="name ellipsis">{{brand.name}}</p>
        <p class="desc ellipsis-2">{{brand.desc}}</p>
      </div>
    </RouterLink>
  </li>
</ul>

    </div>
  </div>
</template>

<script>
import { computed, reactive, ref } from 'vue'
import { useStore } from 'vuex'
import {findBrand} from '@/api/home'
export default {
  name: 'HomeCategory',
  setup(){
    // 
    const store =useStore()
    //  9个分类  1个品牌
    const brand =reactive({
      id:'brand',
      name:'品牌',
      children:[{id:'brand-children',name:'品牌推荐'}],
      // 品牌列表
      brands:[]
    })
    const menuList =computed(()=>{
      // 得到9个分类  子分类只有2个
      const list =store.state.category.list.map(item=>{
        return {
          id:item.id,
          name:item.name,
          children:item.children && item.children.slice(0,2),
          goods:item.goods
        }
      })
      list.push(brand)
      return list
    })
    // 得到弹出推荐层数据
    const categoryId=ref(null)
    const currCategory=computed(()=>{
      return menuList.value.find(item=>item.id===categoryId.value)
    })

    // 获取品牌数据，
    findBrand().then(data=>{
      brand.brands=data.result
    })


    return {menuList,categoryId,currCategory}
  }
}
</script>

<style scoped lang='less'>
.home-category {
  width: 250px;
  height: 500px;
  background: rgba(0,0,0,0.8);
  position: relative;
  z-index: 99;
  .menu {
    li {
      padding-left: 40px;
      height: 50px;
      line-height: 50px;
      &:hover,&.active {
        background: @xtxColor;
      }
      a {
        margin-right: 4px;
        color: #fff;
        &:first-child {
          font-size: 16px;
        }
      }
    }
  }
  // 、、、弹层
    .layer {
    width: 990px;
    height: 500px;
    background: rgba(255,255,255,0.8);
    position: absolute;
    left: 250px;
    top: 0;
    display: none;
    padding: 0 15px;
    h4 {
      font-size: 20px;
      font-weight: normal;
      line-height: 80px;
      small {
        font-size: 16px;
        color: #666;
      }
    }
    ul {
      display: flex;
      flex-wrap: wrap;
      li {
        width: 310px;
        height: 120px;
        margin-right: 15px;
        margin-bottom: 15px;
        border: 1px solid #eee;
        border-radius: 4px;
        background: #fff;


        &:nth-child(3n) {
          margin-right: 0;
        }
        a {
          display: flex;
          width: 100%;
          height: 100%;
          align-items: center;
          padding: 10px;
          &:hover {
            background: #e3f9f4;
          }
          img {
              width: 95px;
              height: 95px;
          }
          .info {
            padding-left: 10px;
            line-height: 24px;
		        width: 190px;
            .name {
              font-size: 16px;
              color: #666;
            }
            .desc {
              color: #999;
            }
            .price {
              font-size: 22px;
              color: @priceColor;
              i {
                font-size: 16px;
              }
            }
          }
        }
      }
      // 品牌的样式
    li.brand {
        height: 180px;
        a {
          align-items: flex-start;
          img {
            width: 120px;
            height: 160px;
          }
          .info {
            p {
              margin-top: 8px;
            }
            .place {
              color: #999;
            }
          }
        }
      }
    }
  }
  &:hover {
    .layer {
      display: block;
    }
  }
}
</style>